The French idiom "Quand les poules auront des dents!" which translates literally to "When hens have teeth!" is used when something is never, ever going to happen. The corresponding English idiom would be "When pigs fly!".
when hens have teeth
The French idiom "Quand les poules auront des dents!" which translates literally to "When hens have teeth!" is used when something is never, ever going to happen. The corresponding English idiom would be "When pigs fly!".